Use predefined resource directory if none is specified

src/simulator/main.cpp

@@ -56,7 +56,7 @@ static constexpr std::string_view TRACE_DIRECTORY = "traces";
 
 int sc_main(int argc, char **argv)
 {
-    std::filesystem::path resourceDirectory = "configs";
+    std::filesystem::path resourceDirectory = DRAMSYS_RESOURCE_DIR;
     if (argc >= 3)
     {
         resourceDirectory = argv[2];